← United States · Coverage record
US · SEC FORM 4
QT IMAGING HOLDINGS, INC.
QTIH · Nasdaq; OTC · CIK 0001844505 · Healthcare
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
2 Form 4 transaction lines observed in the same window
0 sales · 2 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
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SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-01-22 · Katz Avi S.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
The FINRA report lists no short interest for this ticker.
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-01-22 | Katz Avi S | Purchase (P) | COMMON STOCK | 24,107 | USD 6.43 | USD 155,008 | SEC filing ↗ |
| 2025-04-09 | Katz Avi S | Purchase (P) | Common Stock | 392,464 | USD 0.64 | USD 251,177 | SEC filing ↗ |
| 2025-04-09 | Dinu Raluca | Purchase (P) | Common Stock | 392,465 | USD 0.64 | USD 251,178 | SEC filing ↗ |
| 2025-03-21 | GigAcquisitions5, LLC; Katz Avi S | Purchase (P) | Common Stock | 2,788,843 | USD 0.58 | USD 1,617,529 | SEC filing ↗ |
| 2025-03-21 | Dinu Raluca | Purchase (P) | Common Stock | 117,611 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2024-11-12 | Weiner Zeev | Purchase (P) | Common Stock | 85,616 | USD 0.58 | USD 49,657 | SEC filing ↗ |
| 2024-11-12 | Taylor Ross | Purchase (P) | Common Stock | 171,232 | USD 0.58 | USD 99,315 | SEC filing ↗ |
| 2024-11-12 | GigAcquisitions5, LLC; Katz Avi S | Purchase (P) | Common Stock | 3,142,122 | USD 0.58 | USD 1,822,431 | SEC filing ↗ |
| 2024-11-12 | GREENE JAMES S | Purchase (P) | Common Stock | 428,082 | USD 0.58 | USD 248,288 | SEC filing ↗ |
| 2024-11-12 | Dinu Raluca | Purchase (P) | Common Stock | 470,890 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2024-11-12 | DICKSON DANIEL H | Purchase (P) | Common Stock | 85,616 | USD 0.58 | USD 49,657 | SEC filing ↗ |
Form 4 evidence
15 transaction lines in the latest 365-day window; 44 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-08-28 | Dinu Raluca | Award / grant (A) | Common Stock | 484,221 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-04 | TIMM BRYAN | Award / grant (A) | Common Stock | 9,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | Weiner Zeev | Award / grant (A) | Common Stock | 3,500 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (12 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-08-28 | Dinu Raluca | Award / grant (A) | Common Stock | 484,221 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-04 | TIMM BRYAN | Award / grant (A) | Common Stock | 9,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | Weiner Zeev | Award / grant (A) | Common Stock | 3,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | Taylor Ross | Award / grant (A) | Common Stock | 3,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | Katz Avi S | Award / grant (A) | Common Stock | 3,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | KLOCK JOHN C JR | Award / grant (A) | Common Stock | 3,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | Jennings Jay Walter | Award / grant (A) | Common Stock | 2,800 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | GREENE JAMES S | Award / grant (A) | Common Stock | 3,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | Dinu Raluca | Award / grant (A) | Common Stock | 519,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-20 | DICKSON DANIEL H | Award / grant (A) | Common Stock | 3,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-17 | Weiner Zeev | Option exercise / conversion (M) | Common Stock | 23,054 | USD 2.10 | USD 48,330 | SEC filing ↗ |
| 2026-01-22 | Katz Avi S | Purchase (P) | COMMON STOCK | 24,107 | USD 6.43 | USD 155,008 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-19 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | QTIH |
| CIK | 0001844505 |
| Sector | Healthcare |
| Industry | — Yahoo Finance |
| SEC SIC | 3845 Electromedical & Electrotherapeutic Apparatus |
| Exchange | Nasdaq; OTC |
Data coverage
| Local Form 4 history | 44 transaction lines from 2021-09-23 to 2026-08-28 13 P purchase lines · 4 S sale lines · 27 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.